I have passed 1Z0-813 - OCPJP8 upgrade exam yesterday with 76%. Studied around a month for this. (not full time though)
This is my lowest score in Java exams so far, but at least I am glad that I passed.
Used the following books:
1. OCPJP8 Exam 1Z0-809 A Comprehensive OCPJP 8 Certification Guide by S G Ganesh, Tushar Sharma, Hari Kiran Kumar G
2. OCPJP Java8 - Part 2 by Jeanne Boyarsky and Scott Selikoff
3. Enthuware mock exams
For mock exams, I used enthuware. This really helped a lot. I scored in the range of 60 to 65% in Enthuware mocks, but spent a lot more time in reading their explanations / answers.
As usual, their notes are really good.
There were couple of questions on CyclicBarrier, which I didn't see in 813 exam topics
Lots of tricky questions. So read questions again and again. You may see "null" and you think it is null
Almost every questions were mixed with lambdas and streams (at least 90%)
Several questions on reduce(), compute(), remoevIf(), computeIfPresent(), flatMap(), mapToDouble, collect(), Collectors.groupingBy(), Collectors.counting(), average(), replaceAll(), Comparator, thenComparing(), reversed() etc.
Make sure you know all these method signatures. Some of them has Function as an argument, some has BiFunction, UnaryOperator, Predicate, Consumer etc.
Also check the return values. Which one returns int, long, Optional<T>, boolean, void etc. Files.walk(), walkFileTree(), find(), Path.relativize(), FileVisitor interface, WatchService APIs, ForkJoin API's etc.
Got several questions on Exceptions, try() with resources, AutoCloseable too.
Congrats Rajeev! Glad our book could help! I concur with Jeanne, the OCP exams (all 3 of them) are among the hardest in years, especially since they include so many stream questions. Don't fret the score, you did it!
Yeah, CyclicBarrier isn't in the objective list for that upgrade exam, they must have borrowed some questions from the full exam. It's one of the reasons we recommend people read our entire book, even if they are just taking the upgrade exam.
Rajeev Rnair wrote:Your OCPJP book was really good and helpful! Glad that you have added a special section for 1Z0-813 upgrade exam
Glad to hear! We actually rushed to write that part while the book was getting ready for print, since it included so many extra objectives! If you really liked our book, please share your experiences in an Amazon review, to help others thinking of taking the upgrade exam. Congrats again!
Congrats Rajiv. I missed out your post and just saw it now. Glad to know that you read our book - hope you found it useful! If you liked it, please write a review of the book in Amazon.com page for the book.